Jacquard mechanism for embroidering-machines.



A RZAHN. JACQUARD MBCHANISM FOR EMBROIDBRING MACHINES.

' APPLIOATION FILED MAR. 18,1910.

1.013.261. l Patented 32.1.2, 1912.

2 SHEETS-SHEET 14 5mi@ who@ R. ZAHN i JACQUARD MBCHANISM POREMBROIDERING MACHINES.

APPLIOATIO FILED MARJB, 1910.

- Patented Jan.2,1912.

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narran seiiarrasrairaivfr ynarnia RGBEBT ZAHN, OF ELUEN, 'GERMANY'.JACQUARD MECHANISM FOR EMBRODERINGMACHINES.

iii. Specification of, Leiters Patent. latented Jan. f2, 1912.Application filed March 18, 1910. Serial No. 550,123.

To all whom t may concern: soine parts are broken away, illustrating thelBe it known that i, Bonner ZAHN, a sublmachine in operation. 55 ject ofthe King of bavaria, and resident 1, 2, 3, 4, 5 are the lifting bars 0fthe of Plauen, Germany, have invented new and jacquard mechanism formoving the emuseful improvements in Jacquard Mecha; broidery frame of anembroidering machine nisnis for Embroidering-Machines, of whichWhichoperate the soupling bolts b', b2 the following is a full, clear,and exact speci- (Fig. 1), so that when either of the bolts 60'ficatioii is raised by means of a respectivelifting The presentinvention relates to jacquard p angle bar, the saidboltv enters thecorre mechanisms for einbroideringmachines,havsponding hole c of thesliding piece d and ing a plurality of liftingbars for controlling thecoupling of the graduated lever a with the movements of the embroideryframe in. the reciprocating slide f is thereby eected 65 such a way thatthe displacement of one at the hole corresponding .to the length of orother of the lifting bars causes a variable the lever arm chosen. t ldegree of motion to be imparted to the em- The connection of the lslidef With the broidery fra-me. A jacquard mechanism of embroidery frame isfully described inv my this kind is described for example in myapplication 542,305, filed February 5, 1910, 70

-U. S. application for Letters Patent, Serial and the mechanism for'transmitting the mo- No. 542,305, filed February 5, 1910. In tion of thegraduated lever a to the rectijacquard mechanisms of this kind, caremust linearly guided slide f is described in my be taken in order toavoid derangement or United States Patent 961,830. i

damage tothe mechanism, that not more The liftingbars are verticallyadjustable 75 than one lifting bar is in operation at any and are liftedinto the'working position one time. 1 when a slide 6 on thev liftingbars is in the The subjectof the invention is a protecrange of movementof a lifting bar 7 cartive device for jacquard mechanisms of this riedby a lever as shown in Figs. 1 and 4.

- kind, Which is, so arranged that it prevents The jacquard card Joperates pins p which 80 the simultaneous operation of inerethan one inany suitable manner are connected to lifting bar. For this purpose thelifting slides 6. In the example shown, a double Ybars 'are combined onthe one hand with a armed lever 79 is fulcruined to a stationaryreturning mechanism through the medium piece p2 one arm of which ispivotally conof controlling means, and on the'otlier hand nected to thepin p and the other arm of 85 with a jacquard mechanism stop motion bvWhich by a connecting rod p3 is connected means of coupling locks, sothat should more to the 'slide 6. p he operation of the pins p than onelifting bar be actuated in error by the jacquard card J takes place inWell the stop motion is brought into action by known manner, as forinstance, in the manmeans of at least one of the coupling locks nershown in. Fig. 1. Here the roller 1' over 90 to stopV the jacquardmechanism, While on Which'the jacquard card is guided is carried theother hand said controlling means cause by a reciprocatory frame r whichhas a memthe operation of the returning mechanism ber r2 coinciding withthat arm of the double so as to immediately bring back the lifting armedlever p to Which the pin p is conbars, which have been erroneouslyactuated, j nected. The reciprocating movement of the 95 into theirposition of rest. j j frame r is effected from theffcam groove 9 The'accompanying drawing shows one in any suitable or Well known n'ianner.Non' method of carrying out the invention. mally all slides occupy theposition shown in Figure 1 is aside view, partly'in section, dottedoutline in Fig. 1. *i When the card and Fig. 2 a front view, partly insection, cylinder i" is moved to ,the left by means of 100 o f theprotect-ive device sho-ivn in the posithe frame r', a slide G, thecorresponding tion of rest of the lifting bars. Fig. 3 i's vpin p ofWhich'has its free end located oppo- -a similar view to Fig. 2,' butillustrating the site a perforated part of the card J Ivvill caseinwhich tivo lifting bars are together remain stationary, z'. e., in theinitial orl- .A

in the .Working posit-'ion and Fig. '4 is a side `Working position.shown 1n dotted outline 105 .view similar to that 'of Figl and of Whichin Fig. 1,' While those slides,y 'the .pins of l' to the right, e. 4outof the path of the liftcontrolled by a on the shaft v also bent lever 19these parts (Fig. 4C).

he arrangement described works as fol-k which consist of ing bar. 7. j

The lifting bars can only'be brought into the raised position after 'amovable member 8. locking the lifting bars has been disengaged therefromthe lifting bars being progaging the locking vmember 8 lifting bar 7 andthe locking rooved cam disk 9 mounted Figs. l and It).

14 are four coupling locks movable anchors lying he- 30 of the liftingbars 1, 2, which are` ivotally connected (Fig. 4) The i 11,12, 13, and

tween projections 3, 4,- 5, and

- to a vertically movable slide 15 (Figs. 1, 2 and 3). rlhis latter islocked in its lowest position, as are also the lifting bars, by means ofthe locking member 8. On the other hand -in the upper position of theslide l5, no notch on the s ifle lies oppositethe locking member 8 sothat the locking member cannot enter its locking position; but this isnot the case with the lifting bars which may locked in the upperposition. The slide l5 controls an electric -switch 16 for stopping theelectromotor driving the jacquard mechanism. l

The locking member 8 is movable about the pivot 17 and is controlled bythe cam disk 9 by means of a bent lever 19-pivoted at 18 to the saidlocking member 8. The is held against a stop 2l of the locking member 8,by the tension vof a spring 20. lThislever 19 is connected by means of arod 22 to a controlling lever 23, which is designed to bring at propertime a controlling rod 24.- into the range of an arm 25 of the levercarrying the lifting bar 7 (Fig. 4). The controlling rod'24 is pivotallyconnected to a lever 26 which is adapted to restore the lifting barstion of rest, and which carries a return bar 27 which lies over theliftfin bars 'and the slide 15 and which controls the returning of lows:If one of the slides 6 of the lifting barsbe thrust to the left, as

shown in Fig.

l by dotted lines, take for instance that of the lifting bar 2then thebar 7 will engage it as it rises, aiidraise it ltogether with thelifting bar 2, which ispossible as'lrthe locking member 8 hasbeendisengaged at the' same time. The couplinglocks 1l, 12, 13 and 14 whichl-ie between the projections 30 of the lifting bars l, 2, 3, 4, 5, may'hereby so position themselves that the lifting bar 2 withit's projection30 can be raised betlween the coupling locks 1l and 12 (Figi 2 Should,however, by error two lifting bars lying next to one another, take forinsta-nce 'rily lying next to vided with notc es forthe purpose of enmember 8 are of the rotation of into their posithe lifting bars 2 and3,.be raised at the same time, as shown in Fig. 3, then the projectioiis30 of the lifting bars 2 and 3 en gage the coupling lock 12 on both'sides and thereby lift the slide 151 The saine is' obtained when .twolifting bars not .necessite one another are lifted at' then the couplinglocks the same time, as

these two bars, so position lying between themselves that as a singlelarger coupling lbck. By raising the slide 15, the switch lever 16 isput over and the drive of the jacquard mechanism is stopped. Owing tothe momentum of the parts of the machine, the jacquard mechanism will,however, continue te run on. ln the raised position of the slide 15 'theinember #8, as stated above, cannot take up its locking position.'During the continuation 19 is now turned about 18 in such a mannerk thatit pushes the rod 22 tothe left. The controlling lever 23 thereby movesthe rod 211v to the right and as the lifting'bar 7 is raised at thismoment, that is to say, asthe arm 25 has fallen, then the control rod 2imay be over the yarm 25 so that the latter pushes the control rod 24upward, when it again rises, and'thereby swings the returning lever 26in such a manner that the bar 27 is lowered and thrusts both'the liftingbars 2 and 3 as well as the slide l5 downy ward. These lifting bars arethereby brought back into their Aposition of rest and the lockinglmember 8 and the parts con trolled by it, take up their initial positionand the slide 15 allows the drive of the inachine to be again setinaction by means of the lever 16.

What I claim is: 1. In jacquard mechanisms for embroidering machines,the combination with jacquard lifting bars of means for lifting saidjacquard bars, an automatic device for positively returning said bars totheir initial position, av stop motion device for'stopping the jacquardmechanism, coupling locks between the jacquard bars connected to saidstop motion device to cause stopping of the jacquard mechanism when morethan one jacquard bar should have been'lifted, and controlling Ameansfor said returning device, dependent on the operation of said couplinglocks and adapted to set inv action the jacquard bar returning devicewhen said l ving machinesfthe combinationwith jacquard they actin thesame manner l the cam disk 9 'the lever lifting bars of automatic meansfor lifting said jacquard bars, an automat-ic device' for positivelyreturning sa'id bars to their initial position,

controllano' said stop motion derice, locks connected. to said inovablemember and arastop motion device for stopping i' the jacquard mechanism,a movable .member yintermittently y actuating this A.ranged between thejacquard lifting bars to form movable connectorsv between the latter andsaid movable member, and controlling means for said returning device,dependent on-said movable member so as to be operated when the latter isin position for stop motion. j

3. In jacquard mechanisms forfembroidering machines, the combinationwith jacquard lifti'ngbars of an operating member for lifting saidjacquard bars, driving means for operating member, *ai movable operatingmember for positively returning said jacquard bars to their initialposition, a stop motion device for stopping the j acquard mechanism, amovable slide controlling said-stop mot-ion device',jlocks,pivtallyconnected tothe movable slide and arranged between parts of therjacquard lifting bars to form movablel connectors between the latter andthe' movableslide, controlling means for the said jacquard returningmember, .controlled by said movable slide and 'capable of formingconnection between said returning vmember and said driving means.

4. Injacquard mechanisms for embroider#V ing machines, the combinationwith jacquard lifting bars of an operating member Ifor -lifting saidjacquard bars, driving means for intermittently.actuating thisoperatingV member, a movable operatlng member for positively returningsaid jacquard bars to their initial position, a sto motion device forstopping the, jaequar' mechanism, a movable slide controlling said stopmotion device, anchor like locks pivotally connected to the movableslide alud arranged between lprojections of the jacquard lifting bars toforni movableconnectors between the vlatter and the movable slide,controlling means for the said jacquard returninglmember, conti'olled,by said movable slide and capable of forming connection? between saidreturning member and said ldriving means. y

In witness whereof I have hereunto signed my name this 21st dayofFebruary 1910, in the presence of two subscribingwitnesses."v ROBERTZAHN. Witnesses:

ROBERT H; Ninn, RICHARD B. WAsHiNGfroN..

